Fountain pen



J. C. WAHL FOUNTAIN PEN Nov. 17, 1925- File d April 2, 1921 PatentedNov. 17, 1925.

. um'rao s'rii TES" PATIENT Jon 0. Wm, OHICAGOJTLLIHOIS,

' 1,562,267 .QFFICE.

ABSIGNOB IO mfwm column, 0]

To all whom it may concem:

Be it known that I, Joan 0. Wm, a

citizen of the United States, and a resident of the city of Chicago,county of Cook, and

State of Illinois, have inventedcertain new and useful Improvements inFountain Pens,

of which the following is a specification.

My invention relates to fountain pens andmore. particularly toofountainpens whereby the ink capacity of the barrel 1s considerably increasedover correspondin fountain vide an improved filling device and pens inuse today. The barrels 0 the fountain pens now in common use areconstructedof hard rubber. This substance being of a very brittlenature, necessitates the making of the barrel comparatively thick, thusmaterially reducing the inkreservoir in the barrel.

It is with this primary object in view that I have constructed afountain pen, the barrel of which is made of very thin metal, and uponexamination it will be seen that the ink reservoir of my improved penwill be increased by twice the difference in the thickness of the hardrubber barrels now being used. and the thin metal barrel of my improvedpen.

Another object of my invention is to pronovel method of assemblin thesame.

A further object is to provide eflicient means for and method ofsecuring the plug or pen section in the open end of the metal containeror barrel.

-Another object of m invention is to provide a fountain pen of thecharacter above described, which is simple of construction, economicalto manufacture and easy to operate.

- and arrangement of parts hereinafter de-- Other objects will appearhereinafter. The invention consists in the combination scribed andclaimed.

The invention will be best understood by reference to the accompanyingdrawings forming which 1 is a longitudinal sectional view 'of a part ofthis specification, and in my improved pen showing the filling device.

in its closed position.

. Fig. 2 is an elevational view .of the fountain pen cap and clip;

the lower portion of the fi e being a longitudinal sectional view of 3:barrel showing the filling device in its open position".-

tact with the open end of upper or open end thereof as at 12. A plug 13is provided, .at the rear end of which is attached a nipple 14 onwhichis placed a rubber ink sac 15. Mounted in the open end of the plug is apen nib 16 which is provided with a feed nib 17, said feed nib,containing suitable channels for supplying the ink to the nib 16.-'Since the particular means of supplying the pen nib 16 with ink do notform a part of my present invention, it is deemed unnecessary to burdenthis application with a detailed description of same.

That portion of the plug indicated by the numeral 18 fits snugl withinthe tube-11, the periphery thereof forming a gripping surface for thecorrugations 12,'thus forming a very strong rictional engagement betweenthe container tube and the plug caused by a slight distortionof theresilient metal of the corrugations when the portion within thecorrugated end of the container tube. The shoulder 19 on the plug 13prevents the insertion of the entire plug into the tube 11, saidshoulder coming in conthe tube when the plug has been inserted into. thetube the proper distance.

The-cap 20 is interi0rly"threaded at its lower or openend, said threadsbeing adapted to engage the corrugations 12 in the tube 11, thus securellocking the cap and tube together when esired. An inner cap 21,preferably made of hard rubber, is inserted 1n theupper end of themetallic cap 20, said inner cap being of such a length that when thmetallic cap 20 is tightly screwed on the tube 11, it will abut or comein contact withthe end of the plug 13, thuscausing an air-tightenclosure around the pen nib. It has been found by practical use thatthe compression of air within the'air-tight cap when it is'screwed downupon the'pen nib is suflicient under normal temperature to prevent theink from 18 ofthe plug 13 is forced into position cause of t isair-tight enclosure, the

is not allowed to dry. Otherw se, if-there was a circulaticn of air inthe enclosure the pen nib would become dry, and before the pen couldagain be used, it would be necessary to start the ink flowing, which isaccomplished by shaking the pen m an upward and downward irection.

Referring to Fig. 3-, it will bO-ObSGI'VGd that the clip 22 consists of8. prong 23 and a base portlon 24. The base portion 24 has a flange 25wedged thereon and said flange is ada ted to come in side 0 the metalcap 20 when the clip is'in its roper position. The thick portion of thease 24 is so constructed as to' fit intoa hole 26 which is punched inthe cap 20, 'and fithe flange 25 prevents the withdrawing of the clip22. As will be seen,

the length of the hole 26 is greaterthan the extreme width of the flange25. The clip 22 isheld in a line at right angles to theline of the cap20, and the base portion 24 is inserted into the hole 26. The clip isthen turned downwardly so that it will lie ad acent and parallel to thecap 20. Inasmuch as the hole 26' is adapted to receive the base portlon24, 1. will be seen that the flange 25 will press against the inside ofthe cap 20. After the clip, as outlined above, has been properlypositioned in the metallic cap 20, the nner cap 21 is inserted into themetal cap. Be-

cause of the verysnug fit of the inner cap '21 in the cap 20, it willcause a slight bulging of the outer cap at that point where the flange25 rests against its inner wall. However, the bulging is practicallynegligible due to the fact of the extreme thinness of the flange 25 andis undiscernible to the user of the fountain pen.

The method used for filling my improved fountain pen with ink is knownas a shell filling device. The filling device, with the exception of thelever, is completely assembled and aflixed to a shell before it isinserted into the tube 11. The numeral 27 indicates a slotted shell, aportion of said shell extending along and running parallel with theinner side of the casing 11. Detachably affixed to the shell is one endof the spring 28 as is shown at 29, the other end of said spring beingfixedly attached 'to the presser bar 30. That portion of the shellmember 27 extending along and running parallel with the upper undersideof the tube 11 is slotted-as at 31 in order to engage the lever 32; saidslot havin at a determined point a pivot bar 33, w ich serves as 'asupport for the lever which the presser bar is operated.

contact with the inthe filling device has been 32, by. means of Thefountain is in alignment with the slot in the tube.

'lhe'circular shaped aperture 35' at the end of the slot in the shellwill register with the detent' or recess 34 in the tube 11 when thefilling device .is placed within the'tube, said recess 34 serving thetwo-fold purpose of holding the filling device in its proper placewithin the tube 11 and acting as a resting lace for the flat end of thelever when the llin device is in a closed position. After laced in thetube, the lever is properly a justed in the slot,-the lug thereon beingbent around the pivot bar, thus acting as a piv' t by which air' isexpelled from the sac when the lever isin an 0 en position and therefilling of said sac with ink takes plgce when the lever is being,closed. As has en described heretofore, the baseof the clip is insertedin a hole in the metal cap, and then a smaller cap is inserted in themetal cap, saidsmaller cap abutting the end of the plug inwhich the pennib is inserted, causing an air tight enclosure about the pennib; saidsmaller cap also acting as a means to hold the clip in its roperposition.

Whi e I have illustrated and described the preferred form ofconstruction for carrying my invention into effect, this is capable ofvariation and modification without departing from the spirit of theinvention. 1, therefore, do not wish \to be limited to the precisedetails of desire to avail myself of such variations and modificationsas come within the scope of the appended claims.

Having described my invention, what I claim as new and desire to secureby Letters Patent is i 1. In a fountain. pen, a thin metal containertube for housin an ink sack, and formed at one end Wi spirally arrangedcorrugations forming'external threads and internal ridges and having asmooth surfaced extension adapted to be forcibly thrust within saidcorrugated end of the container tube causin a slight distortion of theresilient metal 0 said corrugations longitudinally of said tube, so asconstruction set forth, but I valleys, a pen section to produce a griping action of the corsack, and arranged reads and internal ridges andvalleys, a en section provided with threads for coaction with theexterior spiral corrugations of the shell to secure the cap in positionon the tube over the pen section.

3. In a fountain pen, a thin metal container tube closed atone end andopen at the other, the metal adjacent the open end being formed withcorrugations, and a pen section having a-smooth surfaced extensionthrust within the said open end with such force as to cause a slightdistortion of the corrugations longitudinally of the tube and aresultant tenacious gripping of the corrugation-on the said extension.

4. The .method of uniting a thin metal container tube for fountain pensand a pen section which "consists'in impressing corrugations in'themetal at one end of the tube, forming a smooth extension on the pensection, forcibly inserting the smooth extension within the corrugatedend, and causing a slight distortion of the metal of the corrugationslongitudinally of the tube so that the tendency of said distortedcorrugations to returnto their normal shape will cause a tenaciousgripping of the corrugationson' the extension of the pen section,

5. In a fountain pen a slotted casing, an ink sack in said casing,snugly fit within one end of said casing, an extension on said shelladapted'to lie against the inside of the casing and provided with slotsand a pivot adapted to register with the slot in the casing, a presserbar, a slotted spring member secured at one end to the shell and at theother to the opposite end of the presser bar, and a lever fulcrumed onsaid pivot to extend through the slot in the casing and the slot in thespring member, the lever in its open position striking one end 'ofthespring member slot to limit the a shell adapted to opening movement ofthe lever, the shell with its extension forming the sole support for oneend of the spring member and the lever.

6. In a fountain" pen, a slotted casing adapted to contain an ink sacktherein, a shell adapted to snugly fit within one end of the casing andhaving a slotted extension formed with a lever pivot positioned to liedirectly below the slot in the casing, a lever extending through thecasing slot and formed with ears spaced throughout a portion of theirlength from the body of the lever to provide a slot to receive thepivot, said ears being bent over the pivot when the lever is inoperative position to hold the lever in proper relation to itscooperating parts.

movable to permit repair of the parts when necessary.

8. The method of constructing and assembling the refilling apparatus infountain pens, which consists in providing a shell adapted to snugly fitwithin the. barrel of,

the pen, slotting the'shell to form an integral pivot bearing, providinga. presser bar, connecting a spring at its opposite ends with thepresser bar and the'shell, forming a lever with an open ended slot toreceive the bearing, inserting the assembled shell presser bar, andspring within the barrel, then passing the lever through a slot in thebarrel and the slot in the shell and passing the slotted portion" of the"lever over the pivot bearing, and then bending thematerial of onesideof the slot in the lever overupon the' pivot bearing t'o liold the samein place therein. 7 i

In witness whereof I have hereuntosubscribed myname. V

I JOHN ,o. WAHL.

. In a fountain pen, a slottedcasing, a

